<?php

/**
 * Maikuro Framework
 *
 * LICENSE:
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * The license is bundled with this package in the file LICENSE.txt.
 * You may also obtain a copy of the License at this URL:
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @copyright  Copyright (c) 2010, Jonathan Hedrén
 * @author     Jonathan Hedrén <jonathan.hedren@gmail.com>
 * @license    http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 */


abstract class AbstractHTMLElement
{
    const NEWLINE = "\n";

    /**
     * The keyboard shortcut to access the element.
     *
     * @var string
     */
    public $accessKey;

    /**
     * The class name of the element.
     *
     * @var string
     */
    public $class;

    /**
     * The unique id of the element.
     *
     * @var string
     */
    public $id;

    /**
     * Inline style of the element.
     *
     * @var string
     */
    public $style;

    /**
     * The tab order of the element.
     *
     * @var integer
     */
    public $tabIndex;

    /**
     * The title of the element.
     *
     * @var string
     */
    public $title;

    /**
     *
     * @param string $class
     * @param string $id
     * @return AbstractHTMLElement
     */
    public function  __construct($class = null, $id = null)
    {
        $this->class = $class;
        $this->id = $id;

        return $this;
    }

    /**
     *
     * @return string
     */
    public function __toString()
    {
        return $this->toString();
    }

    
    public function isWrappable()
    {
        if (property_exists($this, 'innerHTML')) {
            return true;
        }
        return false;
    }
    

    /**
     *
     */
    abstract public function toString();

    /**
     *
     * @param array $skipAttributes
     * @return string
     */
    protected function getFormattedAttributes(array $skipAttributes = array())
    {
        $output = '';
        foreach (get_class_vars(get_class($this)) as $attribute => $defaultValue) {
            if (in_array($attribute, $skipAttributes)) {
                continue;
            }
            $value = $this->$attribute;
            if ($value == null) {
                continue;
            }

            $output .= ' ' . $attribute . '="' . $value . '"';
        }
        return $output;
    }
}